Lubricating grease-cup.



F. MILLER.

LUBRICATING GREASE CUP.

APPLICATION FILED ocr. 4. 1913.

1,172,383. Patented Feb. 22,1916.

, INVENTOR.

76467761 JV? 71 1 W 97/ BY 7 T QATTORNEYS.

trai a TED STATES raranrorricn. 7 Y

rennnnrcx Mitten; or OAKLAND, oanrroaiile.

LUBRICATING GdiEASE-CUI.

T 0 all whom it may concern:

Be it known that I, FREDERICK MILLER, a citizen of the United States,-'residing at No. 3010 Bona street, in the city of-Oakland, county of Alameda, State of California, have invented a new and useful Lubricating Grease-Cup, of which the following is a specification. v

This-invention relates to improvements in grease cups and more particularly to a device for dispensing the heavy greases-which are of such consistency that they do not flow b 'ravit Inrthe usual lubricator' for. y 2; y V greases compresslon 1S resorted to in order to force the lubricant into the bearings.

The principal object of my invention is to provide means for causing the lubricant to flow as required by the bearing, thus insuring a supply of lubricant when required and doing away with the necessity of depending on attendant to screw down the compression device of the grease cup.

Another object of my lnvention is to provide a member which rests on the shaft'and transmits the heat from the latter to the heavy grease, this member being so formed as to obviate the danger of wearing a groove around the periphery of the shaft. I am aware that such heat transmitting members have been used in grease cups heretofore, but, these have been of such material that the constant pressure on the shaft would wear grooves in the periphery thereof.

With these and other objects in view my invention consists in the novel construction of the several parts as will be clearly set forth in the following description and more particularly pointed out in the appended claim.

Reference should be had to the accompanying drawing forming a part of this specification wherein, Figure 1 is a view in perspective showing my improved luhricator attached to a shaft bearing. Fig. 2 is an enlarged vertical section through the lubricator and bearing to which it is attached. Fig. 3 is a bottom plan view of the cap used thereon. Fig. 4: is a view in section on the line l-t. Fig. 5 is a View in elevation of the pin used within the lubricator.

Referring to the corresponding 'parts by the same numerals of reference, 1 denotes a shaft journaled in the bearing 2 provided Specification of Letters Patent. I Fata flied Feb, 22, 1916, Application filed October e, 191? Serial No. 793,431

with a lug on the upper side of the cap threaded interiorly as at 4.; 7

My lubricator consists of the body portion threads l in the cap of bearing2.- The upper end of the body portion is threaded as at 'Z' and in engagement therewith is a cap 8 having the downwardly extending U-shaped yoke 9, provided with an opening '10 centrally disposed with respectto the bodyportion and adapted to receive a pin 11. VVithin the body is a cross bar 12 provided with anopening 13 in alinement with the open v ing ofyoke 9 and central with the body portion 5. Pin llalso extends through this opening and on the upper end is provided with an enlarged head 14 on which is seated a spring 15. 'Thepin is placed within the. yoke before the latter is attached to the cap 8 andspring 15 is held in position by the lower coils encirclingthehead 14, the upper end resting'against the inner surface of the cap. The lower portion of the pin resting on the shaft is provided with a tip 16 of Babbitt or other soft bearing metal.

In use the body portion is filled with grease, the'pin 11 is pushed through this 1 grease until the lower end rests on the shaft, in the'meantime'the cap 8 being screwed into place. The pin is of such length that surface of yoke 9, thus the action'ofspring the head 1% does not contact with the lower]- 15 is to press the pin end 16 against the shaft 1. I As the latterrotatesthe friction generates heat which is transmitted through the soft metal point 16. to the pin 11, the

body of which is of good heat conducting material. This causes the grease in the body H portion to melt and run down through the annular space between the pin end andnipple 6. e V

It will be apparent that if the shaft is running with "little friction not much heat will be generated, consequently, little grease.

will be melted and fed to the bearing. If, however, the bearing is dry considerable heat will be generated and a greater amount of oil will be melted'and fed to the bearing.

Thus to a great measure the grease is fed automatically according to the requirements of the bearing.

While I have shown the preferred con struction of my invention it W1ll be understood that Va 10113 changes wlthin the scope ofthe claim can be made without departing portion, a reduced neck having screw threads thereon a screwthreaded cap adapted to Copies of this patent may be c'ota'ined'for five cents each hy addressing tl1eComm-issioner of Patents fit said neck, a U-shaped yoke attached to the inside of said cap, said guide" bars and said yoke having alining openings therethrough, a pin extending through said bpenings with the lower end thereof resting on the shaft of said bearing, an enlarged head on said pin seated within saidyoke, and a spring interposed between said head and said cap.

In testimony whereof I lhave aiiilxed my 25 signature in the presence of two witnesses.

FREDERICK MILLER. itnesses EDGAR HARVEY ELLSWORTH, THOMAS HOLDEN.

Washington, D. C. 

